Water Electrolysis Using Thin Pt and RuOx Catalysts Deposited by a Flame-Annealing Method on Pencil-Lead Graphite-Rod Electrodes
| العنوان: | Water Electrolysis Using Thin Pt and RuOx Catalysts Deposited by a Flame-Annealing Method on Pencil-Lead Graphite-Rod Electrodes |
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| المؤلفون: | Hironori Fujisawa, Yuichi Haruyama, Hideaki Masutani, Yuuki Koshino, Masahito Niibe, Ryuki Tsuji, Seigo Ito, Seiji Nakashima, Satoru Suzuki |
| المصدر: | ACS Omega, Vol 5, Iss 11, Pp 6090-6099 (2020) ACS Omega |
| بيانات النشر: | American Chemical Society, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Materials science, Electrolysis of water, General Chemical Engineering, Inorganic chemistry, Oxide, Oxygen evolution, chemistry.chemical_element, General Chemistry, Article, Ruthenium, Catalysis, chemistry.chemical_compound, Chemistry, X-ray photoelectron spectroscopy, chemistry, Graphite, Platinum, QD1-999 |
| الوصف: | An inexpensive, simple, and high-activity catalyst preparation method has been introduced in this work. Pt and RuO x catalysts were fabricated by soaking inexpensive graphite electrodes (pencil-lead graphite rod: PGR) in catalyst precursor solutions and using a simple flame-annealing method, which results in lower amount of Pt and RuO x catalyst layers. From X-ray photoelectron spectroscopy and near-edge X-ray absorption fine structure analysis, it has been found that platinum and ruthenium were deposited as zero-valence metal (Pt) and oxide (RuO x ), respectively. Catalytic activities of Pt/PGR and RuO x /PGR for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) were evaluated using neutral 1 M Na2SO4 aqueous electrolyte, respectively. Although HER and OER currents using PGR without catalysts were -16 mA cm-2 (at -1.5 V vs Ag/AgCl) and +20 mA cm-2 (at +2.0 V vs Ag/AgCl), they were improved to -110 and +80 mA cm-2 with catalysts (Pt and RuO x ), respectively. Such an inexpensive and rapid catalyst electrode preparation method on PGR using flame-annealing is a very significant method in the initial catalyst activity evaluation requiring a large amount of trial and error. |
| اللغة: | English |
| تدمد: | 2470-1343 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a5a9b3c806173d982acdf987b7042f93 https://doaj.org/article/a9cf28c6b12c4c7e856bf1a67c3e3912 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....a5a9b3c806173d982acdf987b7042f93 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 24701343 |
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